Sharpener, in particular for soft-core pencils

Abstract

A sharpener contains a housing having a receiving channel for a pencil which is to be sharpened. The sharpener is intended to be seated as a protective cap, when the pencil is not in use, with a clamping fit on the pencil circumference. The clamping connection necessary for this purpose is an external clamping-force producer which can be removed manually from acting on the housing, in particular a cleaning stick, with, for the purpose of providing the clamping force, is for example a pressure-exerting lug in the form of a wedge or with an eccentric.

I claim:  
     
       1. A sharpener for shaping a use end of an item to be sharpened, comprising: 
       a housing having a receiving channel formed therein for receiving a use end of a marking implement having a shank;  
       a sharpening member disposed in said housing for shaping the marking implement; and  
       a manually removable external clamping-force producer acting on said housing, said housing being seated as a protective cap, when not in use, with a clamping fit on the shank of the marking implement.  
     
     
       2. The sharpener according to claim  1 , wherein said manually removable clamping-force producer is a functional part having a second use. 
     
     
       3. The sharpener according to claim  2 , wherein said manually removable clamping-force producer is at least one of a cleaning stick, a shaping device for the use end of the marking implement, and a retaining clip retained on the shank of the marking implement. 
     
     
       4. The sharpener according to claim  1 , wherein said housing has a retaining channel with a quiver-shaped insertion opening formed therein for receiving said manually removable external clamping-force producer, said manually removable external clamping-force producer configured for acting directly or indirectly on the shank of the marking implement. 
     
     
       5. The sharpener according to claim  4 , wherein said housing has a pressure-exerting tongue flanking said receiving channel for engaging the use end of the marking implement and said pressure-exerting tongue having a side directed away from said receiving channel, and including a pressure-exerting lug for forcing said pressure-exerting tongue in a clamping direction and acts on said side of said pressure-exerting tongue directed away from said receiving channel. 
     
     
       6. The sharpener according to claim  5 , wherein said pressure-exerting lug is connected to said manually removable external clamping-force producer. 
     
     
       7. The sharpener according to claim  6 , wherein said pressure-exerting lug is a pressure-exerting wedge tapering in an insertion direction. 
     
     
       8. The sharpener according to claim  5 , wherein said pressure-exerting tongue is an integral part of said housing. 
     
     
       9. The sharpener according to claim  8 , wherein said pressure-exerting tongue is an intermediate wall which can be deformed radially inward in a direction of said receiving channel and disposed between said receiving channel and said retaining channel. 
     
     
       10. The sharpener according to claim  1 , wherein said manually removable external clamping-force producer is an insertion/pivot pin and an eccentric positioned eccentrically on said insertion/pivot pin mounted rotatably in said housing. 
     
     
       11. The sharpener according to claim  10 , wherein said receiving channel has an axis and said insertion/pivot pin in its insertion position runs substantially parallel to said axis of said receiving channel. 
     
     
       12. The sharpener according to claim  10 , wherein in its insertion position, said eccentric of said manually removable external clamping-force producer is positioned outside of said housing. 
     
     
       13. The sharpener according to claim  10 , wherein said manually removable external clamping-force producer is an oval eccentric plate having an eccentric side, a substantially centrally projecting eccentric protrusion disposed on said eccentric side, and a hollow-shaped wing adjoined on both sides of said substantially centrally projecting eccentric protrusion. 
     
     
       14. The sharpener according to claim  1 , including an attachable shaving-collecting container, said receiving channel has an introduction opening and said housing has a housing side disposed opposite said introduction opening of in said receiving channel, said attachable shaving-collecting container disposed on said housing side. 
     
     
       15. The sharpener according to claim  14 , wherein said attachable shaving-collecting container has a circumferential shape and said housing has a circumferential shape being the same as said circumferential shape of said attachable shaving-collecting container. 
     
     
       16. The sharpener according to claim  14 , wherein said attachable shaving-collecting container is connected to said housing in a rotationally fixed manner. 
     
     
       17. The sharpener according to claim  14 , wherein at least one of said housing and said attachable shaving-collecting container has an elliptical cross-sectional shape.